Heating-furnace.



M. H. DET

RICK.

nNAcE. APPLICATION HLED FEB- 19. I916 HEATING u Patented Mar. 12, 1918.

ag My? MYEOIWH. DETRICK, OF CHICAGO, ILLINOIS, ASSIGNOR TO M. H. DETRICK 00., OF

.cnrcnco, rumors,

A. CORPORATION OF ILLINOIS.

HEATING-FURNACE.

Specification of Letters Patent.

Patented Mar. 11.2, 191%.

To all whom it may concern:

Be it known that I, MYRON H. DETRICK, a citizen of the United States, residing at the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Heating-Fun naces, of which the following is a specification.

My invention relates to improvements in heating furnaces and is especially directed to the manner of supporting the end fire bricks.

. In furnaces now in general use, a plurality of arch bars are suspended from a suitable supporting structure and these arch bars respectively support a series of fire bricks for protecting said arch bars from the heat of the furnace. In order to protect the ends of these arch bars, end bricks have been provided, and these end bricks have been supported by overhanging end irons which in turn are carried by the supportin structure.

%)ne of the principal objects of this invention is to provide a novel means for supporting these end fire bricks without the necessity of employing said overhanging end irons.

Another object of the invention is to provide an end fire brick which is supported by the adjacent brick of the series in such a manner that the end of the arch bar will be better protected against the heat from the furnace.

Another object of the invention is to provide an end fire brick and the adjacent fire brick with an interlocking connection through the medium of which the end fire brick is supported against downward and lateral movements but is capable of being readily removed.

A still further object of the invention is to provide an interlocking connection between the end fire brick and the adjacent fire brick such that, should the main portion of the end fire brick become disintegrated through the action of the heat, the remainder will still protect the adjacent end of the arch bar.

In the drawings which show by way of illustration one embodiment of my invention,

Figure 1 is a. partial sectional. view through the fire bricks and the supporting structure therefor, the archbar being shown in elevation;

Fig. 2 is a detail cross sectional view taken on the line 2-2 of Fig. 1;

Fi 3 is a perspective view of oneof the end re bricks;

Fig. 4 is a perspective view of one of the fire bricks adjacent said end fire bricks; and

Fig. 5 is a perspective View of one of the inner fire bricks.

Like reference numerals designate corresponding parts in all the figures of the drawings.

Referring to the drawings in detail, 5 designates an arch bar which is carried by a suitable supporting structure 6. The arch bar 5 is of an inverted T-shaped structure in cross section and includes opposed flanges 77 which extend laterally from the bottom of said bar. Supported by each arch bar 5 is a series of fire bricks 8. Each series of fire bricks includes an outer brick 8.

Each of these bricks is formed along its upper portion with an inwardly extending groove 9 which includes oppositely extending undercut portions 10, thus forming an inverted T-shaped groove in cross-section for receiving the flanges 7 of the arch bar.

The outer fire brick 8 is formed with a similarly inverted T-shaped groove in cross section and is supported by the flanges 7 of said arch bar. The outer upper corner of this fire brick is cut away to form a seat 11. This seat includes a substantially vertical wall 12 which preferably alines with the outer end 5 of said arch bar, and with a downwardly and inwardly inclined lower supporting surface which forms a depressed seat 13.

Each end fire brick 14: is of substantially the same height as the fire bricks 8 and 8 and is disposed against the outer face of the adjacent or outer fire brick 8. The upper portion of the end fire brick 14 is provided with an overhanging part 15, the under surface of which is undercut as at 16 to fit the seat 13 formed in the adjacent or outer brick 8. By undercutting this overhanging part 15, a resultant depending nose 17 is formed which as above noted fits the depressed seat 13. This connection between the outer fire brick 8" and the end brick 1% provides an interlocking connection thereetween. r

This interlocking connection provides a means for supportlng the end brick 14 by the adjacent or outer fire brick 8. The connection also permits the end brick 14 to be readily attached to or detached from said outer or adjacent fire brick 8 The overhanging part is disposed against'the outer end 5 of the arch bar 5 and protects said end from the action of the furnace heat. By extending the outer portion of the adjacent brick 8 beyond the outer end 5 of thearch bar, and providing the end fire brick 14 with thefinwardly extending and overhanging part 15, 1 have caused the end 5 of said arch bar to be farther removed from theheat of the furnace than any of the constructions now in general use.

It will also be seen that the end brick 14 is entirely supported by the adjacent fire brick 8 and consequently I have entirely eliminated the necessity of employing the end irons which have heretofore been used for supporting the end bricks.

It will also be observed that by my improved constructiomshould the body portion of the end brick become disintegrated through the action of the furnace heat, the overhanging part 15 will still be supported in its position by the adjacent brick 8 and consequently the outer end of'therarch bar will still be protected against the furnace heat.

Having thus described my invention, what I claim is:

1. T he combination with a supporting bar, of a series of fire bricks thereon, and an end fire brick having an overhanging portion imposed on the "adjacent end brick of tion with the adjacent brick of the series,

the interlockin connecting portion of the end brick abuttlng the outer end of the said bar above said adjacent brick.

3. The combination with bar, of a series of fire bricks-thereon, including an outer brick extending partly beyond the end of the bar, and an end brick having an interlocking connection with the extending portion of the outer brick, the interlocking connecting portion of the end brick abutting the outer end of the bar.

4. The combination with a supporting bar, of a series of fire bricks thereon, including an outer brick extending partly beyond the end of the bar and having its upper corner portion shaped to form a seat, and an end brick having an overhanging portion imposed on said seat and abutting the outer end of said bar.

5. The combination with a supporting bar, of a series of fire bricks thereon, including an outer brick extending partly beyond the end of the bar and having the upper corner of its extended portion cut away to form a depressed seat, and an end brick having an overhanging portion provided with a depending nose registering with said seat, said portion abuttin the outer end of the bar.

Signed atChicago, Illinois, February 15, 1916.

MYRON H. DETRICK.

Witnesses:

C. K. CHAMBERLAIN, A. S. Pnrnmrs.

a supporting 

